Final answer:
To calculate the actual distance for a distance on a map, multiply the map distance by the scale factor which is 0.0049 km.
Step-by-step explanation:
To calculate the corresponding actual distance for a distance between two points on a map drawn at a scale of 1:1000, you need to use the scale factor.
The scale factor represents the ratio of the map distance to the actual distance.
In this case, the scale factor is 1/1000. To find the actual distance, you can multiply the map distance by the scale factor.
For example, if the distance on the map is 4.9 cm, the corresponding actual distance would be 4.9 cm x 1/1000 = 0.0049 km.